body {
    padding-top: 20px;
}
ul {
    padding-top: 5px;
}
li {
    list-style: none;
    cursor: pointer;
}
ul,ul>#menu1,#menu2,#menu3>li {
    font-size: 18px;
    margin-bottom: 1rem;
}

fieldset {
    border: #000 1px dashed;
    width: 225px;
    height: 225px;
    padding: 10px;
    text-align: center;
    float: left;
    margin-left: 5px;
}

#cont_left {
    width: 320px;
    height: 500px;
    margin: 20px;
    float: left;
}

#cont_right {
    float: left;
}

.newcss1 {
    background-color: yellowgreen;
}